Stuedeman



Jan. -10, 192a DISAPPEARING DOG Filed June 27, 1923 I A. G. STUEDEMANWITNESSES MflW Q the way of the wor Patented Jan. 10, 1928.

' UNITED STATES PATENT OFFICE.

AN TON G. BTUEDEMAN, OF SHEBOYGAN, WISCONSIH,ASSIGNOR TO JENKINS MACHINECOMPANY, OF SHEBOYGAN, WISCONSIN, A CORPORATION OF WISCONSIN.

mean-ammo nbe.

Application filed fume 21, we. Serial No. clams This invention relatesto disappearing do a for feed chains of double end tenoners and doublecut-ofi' saws and the like and has for its object to provide a dog whichwill serve the usual purpose of dogs in squaring the work to be operatedupon and forcibly feeding it in that dondition to the cutting tool ortools, but which will also yield when the work is placed u on it andmdve out of so as to make it unnecessary to remove do s when work widerthan the spacing of the do s is used.

With machines of this aiaracter the dogs of the separate feed chains areadjusted with respect to each other so that the work when bearingthereagainst will he squared with relation to the line of feed and thecutting operation performed thereon will be scpmreil with relation tothe edges of the war: and when the dogs 'are spaced for using narrowwork they are positioned as closely together as possible in order thatthe machine may work to full capacity. Then when wider work is used itis customary to remove some of the dogs to permit the work to lie flaton the guides, which operation results'iu a loss of time, and an evengreater loss of time results from the necessity for replacing the dogsand readjustin them when the machine is a ain to be used or narrow work.J

'I he disappearing dogs of the present invention are clesigned to avoidthe necessity for removing them as they are capable of yielding toaccommodate wider work and retain their adjustments so that they areready at any time to receive the narrow work, even permitting broad andnarrow work to be passed through the machine at the same time.

iVith the above and other objects in view the invention consists in thedisa pe'ariug do as herein claimed and all equiva cuts.

fieferring to the accompanying drawing, in which like characters ofreference indi cate the same parts in different views.

Fig. 1 is a pers ective view of a gear driven double cut-o saw providedwith the disappearing do s of this invention;

Fig. 2 is an i; chains with parts sectioned and showing the dogs inoperative and inoperative positions. an

Fig. 3 1s a plan view of one of the dogs.

evation of one of the feed In these drawings, 10 indicates the usualfeed chains "for the woodworkin machine. in this instance a gear drivendouble cutcfl' saw 11, which chains are run parallel at unhform speedand are rovided with dogs squared with res act to tie direction of feedso that the war on aged thereby will be fed to the cutting too 5 in suchuarcd relation and the work erformed dill be corres ondingly squa Thesedogs consist of 0g members 12 which are pivotally mounted in slots 13 ofthe block members of the chains 10 by npivotally fitting upon pins 14passed latera through said block members and refers. ly countersunk andriveted therein.

he heavier lower end of the dog member causes it to swing upright andbear against a. sto pin 15 also passed laterally through said lockmember and preferably countersunk an riveted therein. In the uislandingand of the dog is threaded an a justing screw 16 with a set nut 17thereon to clamp it in its adjustments and on the end of the set screwis the usual head 18'for abutting against the rear edge of the work 19as the means for forcing t e work along the guides and presser bars andagainst the cutting tools.

In 0 eration the dogs, which may. convenient y be placed in all of theblocks of the chains, are so closely spaced as to accommodate thenarrowest strips for which the nuichine is intended so as to enable themachine to be fed to its greatest capacity. When wider ,work is used itdepresses such dogs as itlies upon, causing the dogs to swm r totheposition's'hown by dotted lines in Fig. 2, where they are entirelyout of the way'of the work. As soon as the work is removed the dogsreturn to their upright positions by the influence of their heavierlower ends and the'enga ement with the stop 'pins 15 is again efiectewhich means that the dogs are efi'ective for again operating under theirpredetermined adjustment for squaring the work.

Under the old arran ement with fixed dogs spaced at seven andthree-quarter inch centers, if the operator desires to cut stocktwenty-four inches wide, it is necessary to remove two dogs in order tomake space for the twenty-four inch stock, whereas with the disappearingdog of the present invention no removal of dogs is necessary end seveninch stock or thirtj inch stock may be run at the same time.

By extending the heads of the dogs will in advance of their pivots, workplaced directly thereon will ,ress the dogs entirely out of the plane 0the work-supporting face of the chains so that no obstruction interfereswith the work lying flat on the chains or on other guides rovidedtherefor at the level of the chains an the dogs beyond the work willcome into engagement with it and feed it through the machine.

WhatI claim as new and desire tosecure by Letters Patent is:

1. In a pair of parallel feed cheins for woodworking machines, a feedchain, dogs pivotelly mounted thereon to yield when work tizdpllwedthereon, and adjustin .screws moun on the dogs for engaging t e work andadjustable to true the work.

2. In a, chain feed for woodworking machines, a air of parallel feedchains having their b1 members provided with openings therethrough,dogmembers ivot ally mounted-in said openings with t eir lower endsforming weights 'for holding them upright, stop pins extending acrossthe .openinge and enga'ed by the dogs, adjusting screws three throughthe upper ends of the d ogsyand headspn the adjusting screws forengaging the work and adjustable for truing the work.

In testimony whereof I afiix my signature.

ANTON G. STUEDEMAN.

removal of dogs is necessary and seven inch stock or thirty inch stockmay be run at the same time.

By extending the heads of the dogs well in advance of their pivots, workplaced directly thereon will press the dogs entirely out of the plane ofthe work-supporting face of the chains so that no obstruction interfereswith the work lying flat on the chains or on other guides providedtherefor at the level of the chains and the dogs beyond the work willcome into engagement with it: and feed it through the machine.

What I claim as new and desire to secure by Letters Patent is:

1. In a pair of parallel feed chains for woodworking machines, a feedchain, dogs pivotally mounted thereon to yield when forming weights forholding them up right, stop pins extending across the openings andengaged by the dogs, adjusting screws threaded through the upper ends ofthe dogs, and heads on the adjusting screws for engaging the Work andadjustable for truing the work.

In testimony whereof I nflix my signature.

ANTON G. STUEDEMAN.

CERTIFICATE OF CORRECTION.

Patent No. 1,655, 580.

Granted January 10, 1928, to

ANTON G. STUEDEMAN.

It is hereby certified that error appears in the printed specificationof the above numbered patent requiring correction as follows: Page 2,lines 16 and 17, claim 7, strike out the words "In a pair of parallel.feed chains for woodworking machines, afe ed chain" and insert instead"In a chain feed for woodworking machines, a pair of paraliei feedchains"; and that the said Letters Patent should he read with thiscorrection therein that the same may conform to the record of the casein the Patent Office.

Signed and sealed this 21st day of February, A. n. 1928.

M. J. Moore,

Seal. Acting Commissioner of Patents.

CERTIFICATE OF CORRECTlON.

Patent No. 1,655,580. Granted January it), 1928, to

ANTON G. STUEDEMAN.

It is hereby certified that error appears in the printed specificationof the above numbered patent requiring correction as follows: Page 2,lines 16 and 17, claim 7, strike out the words "in a pair of parallel.leed chains for woodworking machines, ateed chain" and insert instead"In a chain feed for woodworking machines, a pair of pnralie! feedchains"; and that the said Letters Patent should be read with thiscorrection therein that the same may conform to the record of the caseinthe Patent Office.

Signed and sealed this 21st day of February, A. D. 1928.

M. J. Moore Seal. Acting Commissioner of Patents.

